Electric-light fixture



Oct. 15, 1929. R. HAMMERLY ELECTRIC LIGHT FIXTURE Filed June 28. 1928 NVENTOR Z7 jiw/zai'dfimmel ATTORNEY Patented Oct. 15, 1929 UNITED STATES PATENT? OFFICE nnnc'rmc-Lmnr rrx'runn Application filed June 28,

M invention has for its object to provide an e ectric' 1i ht fixture so constructed as to make it possible to readily secure it to a stud or support at an outlet without twisting the {a electric light wires which connect the outlet with the electric light fixture. Another object of'my invention is to construct the electric light fixture in two parts, one of which may be screwed to or otherwise secured to the stud at the outlet, the other part of the electric light fixture being constructed to contact with the first art and being held thereto by means provi ed without turning the first part relatively to the second part.

Still another object of the invention is to provide, when desired, some freedom of movement between the body of the electric light fixture and the part secured to thestud at the outlet so that when the stud is in the ceiling and is out of alignment the body of the electric light fixture will nevertheless be disposed perpendicularly.

Additional objects of the invention will appear in the following specification, in which the preferred form of my invention is described.

In the drawings similar reference characters refer to similar parts in all the views, in which Fig. 1 isa fragmentary view, part1 in section, showing how the electric light xture is secured to a ceiling.

Fig. 2 is a sectional view of Fig. 1.

Fig. 3 is a sectional view on the line 3-3 of Fig. 2. p x ,1.

Fig. 4 is a fragmentary view showing a modified form of the invention. j

Fig. 5 is a sectional view on the line 5 -5 of Fig. 4. 1

The electric light fixtures which are now being used are provided withgthreads which meshwith the threads on the stud at the outlet, and when the fixture as a unit is screwed in place the electric light wires connecting the outlet with the electric light fixture are twisted, which often damages the insulation thereby causing a short circuit. This is avoided in the electric light fixture which is using the fixture which is described in this the subject-matter of this applicationfor in 1928. serial No. 288,999.

specification thereis no possibility of, twistin the elect ight wires or otherwise damaging the insulation.

By referring to the-drawings it will be seen that a bracket 10 is rovided with an inner thread 11 which is a apted to mesh with an outer thread 12.0n a stud 13 which, as shown in Fig. 1 of the drawings, depends from the ceiling 14 but which may be in a sidewall as will be readily understood. 'To the bracket 10 there is secured a hollowmember 15 by means of a screw 16, the head of the screw 16 engaging shoulder 17 at the inner side of the hollow member 15, as best seen in Figs. 2 and 4 of the drawings. a This so ew meshes in a threaded openmg 18 in t e bracket 10. It will be understood that there maybe some play between thechollow member 15 and the bracket 10 so that .if the stud 13 is out of alignment the body ofthe fixture will nevertheless assume a per endicular position. However, when a wall xture is to e held in place,the hollow member 15 may be secured rigidly to the bracket 10 by constructing the parts so that the head of the screw 16 will press the hollow member '15 firmly against the bracket 10.

The hollow member 15 is provided with one or more, preferably a plurality, of openings 19, through one or more of which the electric wires 20 may extend, and there are slots 21 in the hollow member 15 which extend from the said openings 19 to the outer end 22 of the hollow member 15. The hollow member 15 has inner threads 23 and outer threads 24 at its said slots 21.

In connection with the hollow. member 15 there is provided a tubular member 25 which is a part of the body of the electric light fixture. This tubular member 25 has an inner thread 26 at itsinner end, it being possible to push the said imier end of the tubular member 25 with the outer thread 26 within the outer end of the hollow member 15, the

slots 21 permitting a free movement of the v 23 a ainst the outer which acts as a binder may be screwed down to grip the portions of the hollow member 15 between the slots 21 to press the said portions of the hollow member with the inner threads 23 against the outer thread 26 at the end of the tubular member 25.

In using the electric light fixture, the bracket carryin the hollow member is screwed to'the stu 13 when the wires are disposedthrough the openings 19 and out of the outer end of the hollow member 15 through the-tubular member 25, where they are connected with the electric light fixture in the customary manner. When this has been done the nut 27 having been turned away from the outer'end of the hollow member 15, the end of the tubular member 25 with its screw 26 is ressed in the outer end of the ing through its other end, the member beyond the opening and to its said other .end being of increased diameter and exteriorl the said other end of the memberb a body member having an end normally disthe'turning of the nut in the thread on the member to grip the body member by the meme.

ber.

' RICHARD HAMMERLY.

hollow mem er 15 when the nut 27 isturned I to grip the outer" end of the hollow member. 15 with its inner thread 23 locking withthe outer thread'26 on the tubular member 25. I

In the modified 'form of the invention, shown in Figs. 4 and 5, instead of the outer thread 24 and the nut 27 a stra 28 is employed which has terminals 29 wit a screw 30 passing through an orifice 31 in one of the terminals and meshing with a threaded openin 32 in theother terminal, so that with the th ular member 25 in osition the terminals threaded, eing open,

0 posed in the said other end of the member 29 of the strap 28 may e drawn together by v the said screw 30 to hold the hollow member 15 between theislots 21 with the inner thread thread 26 on the tubular mem r 25. r I

' I claim:

1 In an electric li ht fixture, a bracket adapted to be attachexf to a stud at an outlet,

I the bracket having a threaded opening, -a

P member having an opening therethrogilgh, the

member having an opening therethrough, the member havin 1 an mner shoulder a jacent one of its en a screw meshing in the threaded opening in the bracket and provided with a head eng ing the inner-shoulderin the memthe member for ad ustably-secur' bet to the bracket, the member a'ving an opening for an electric light wire and a longitudinal ,slot extending from the opening throu h its other end, a h3g5 member. aving an en adapted to be inse' in the last-mentioned end of the member and means to press the member against the end of the body mem- 7 her for holding the body member in position.

2; In an electric li ht fixture, a bracket adapted tobe attache to a stud at an outlet, the bracket having a threaded opening, a

member havin an mnervshoulder. 1acent one of itsen' s, a screw meshing in the threaded openin in the bracket and provided with a he enga the inner shoulder in the member for a justabliesecuring the member to the bracket, the mem I having an openin adjacent its said end for an electric light wire and a slot extending from the open- 

